I've had my 7 year old pitbull on these for a few years. His littermate/brother has had 2 acl surgeries and now his hips are getting bad. So I wanted to be sure my boy doesn't follow down the same path since it's hereditary. so far so good. My boy plays like a puppy rubs, jumps and loves the taste!
I also feed my German shepherd pup 1 a day just to keep him healthy since shepherds are prone to hip problems.